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J. F. ZIEGLER. FILTER No. 599,757. Patented Mar. 1, 1898.

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FILTER. N0.'599,75'7. Patented Mar. 1, 1898.

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JOHN F. ZIEGLER, or TOLEDO, OHIO.

FILTER.

SPEGIFICA TION forming part of Letters Patent No. 599,757, dated March 1, 1898.

Application filed January 25, 1897. Serial No. 620,521. (No model.)

To all whom it may concern:

Be it known that I, JOHN F. ZIEGLER, of Toledo, county of Lucas, and State of Ohio, have invented certain new and useful Improvements in Filters and I do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same, reference bein g had to the accompanying drawings, and to the figures of reference marked thereon, which form of blocks to form an enlarged filtering-section,

whereby the filter may be enlarged to meet any desired demand.

The invention further consists in the parts as shown, described, and claimed.

In the drawings, Figure 1 is a sectional plan view of a pressure filter, illustrating a construction adaptable for a waterworks where it is desired to filter the water-supply for a city or town. Fig. 2 is a sectional View taken at a point indicated by the lines 00 m, Fig. 1. Fig. 3 is a plan view taken at a point indicated by the lines y y, Fig. 2. Fig. 4. is a sectional elevation taken at a point indicated by the lines 2 2, Fig. 2. Fig. 5 is a view similar to Fig. 4, illustrating a modification of a portion of a filtering-section.

In carrying out my invention I employ a chamber or a series of chambers 1, connected together but insulated from each other. In a large filter these chambers are formed of masonry and are preferably bound together by metallic braces or bands, (shown in dotted lines, Fig. 1,) the bands 2 surrounding each chamber being built intothe masonry and are secured therein and intoeach other by vertical metallic posts 3.- By this arrange ment the chambers lare prevented from expanding, due to the pressure of water thereformed, as are also the standards 5, wherebythey are solid with the masonry of the filter, the flanges of the standards forming the recesses into which slabs 6 of filtering material are inserted and held from lateral movement, there being two slabs secured between adjacent standards in parallel relation, thereby forming a chamber 7, which is insulated from the interior of the chamber 1 by the walls of the filtering material. Within each chamber 1 there are preferably three sections of filtering material, each section acting as an independent filter and built up of a plurality of rows of slabs separated by the rows of standards 5, the standards being perforated centrally along their length, as at 7 so that the chambers formed by adjacent slabs connect with each other.

8 designates the supply-pipe, connected with any desired source of Water-supply under. pressure, and connecting with said pipe 8 and the interior of each of the chambers 1 are individual supply pipes.9, having valves 10 interposed thereon.

11 designates the feed-pipe, leading to the source of discharge, having branch pipes 12 connecting therewith, which connect with the individual pipes 13, leading from each of the chambers 7 to each of the filtering-sections. Pipes 12 are provided with valves 14.

It will thus be seen that water under pressure when the valves 10 are open enters the interior of the chambers 1 and has an outward pressure against the interior surface of the walls of the chambers 1 and also against the exterior surface of the sections composed of the filtering-blocks,with the result that the water percolates through the Walls of the filtering-blocks and is cleansed of all impurities into the interior chambers 7 thereof and passes through the pipes 13 and branch pipes 2 into the supply-pipe 11 to the point of consumption.

It will be seen that there is an external pressure upon the filteringsections, and in order to prevent the same from collapsing the chambers 7 are preferably filled with sand or gran ulous materiahthrough which the filtered water has a free passage.

In order to effectually seal the sides of the filtering-blocks 6 to each other and to the standards 4; and 5, respectively, each of the edges of the filtering-blocks is formed with a channel 15, and interposed between the blocks in alinement with the channel when the sections are being put together during the construction of the filter is the waterproof cement by which the sections are secured together and to the standards. I con sider this feature of the groove around the edges of the filtering-blocks of great importance, as I am enabled to secure these filtering-bloeks to each other, to the standards, or directly to the side wall of the interior of the filtering-chambers 1 without the possibility of leakage, as the cement forms a lock to prevent the blocks from side movement.

In Fig. 5 I have illustrated a modification in which each of the blocks is curved, the flanges in the standards a and 5 being curved correspondingly to receive the edges of the blocks. By this means I can dispense with the filling of sand or granulous material within the chambers 7, as the curved portions of the filtering-block act as an arch to withstand the pressure of the water against them.

\Vhile I have shown a series of filteringchambers 1, formed with filtering-blocks arranged therein, I wish it understood that I may use one chamber, if desired, and that I may otherwise depart from the construction as shown without departing from the spirit of my invention.

hat I claim is- 1. In a filter, a compartment having a series of filtering-blocks arranged therein in parallel relation forming a plurality of independent filters, each filter built up of a plurality of slabs of filtering material separated bystandards, the standards being perforated centrally along their length so that the chambers formed by adjacent slabs communicate with each other.

2. In a filter, a chamber composed of enveloping walls, filtering-blocks secured therein in parallel relation, a groove in the edge of the filteringblock to receive the cement by which to secure the edges of the filteringblocks to the wall of the chamber.

3. In a filter, a plurality of chambers insulated from each other,vertieal standards within each chamber, the standards being in alinement with each other and extending across the chamber, filtering-blocks secured in parallel relation between the standards forminga chamber for filtered waterbetween the same, a feed-pipe and branch pipes leading therefrom into the chambers, an exit-pipe, and branch pipes connecting the same and each individual chamber formed between the illtering-blocks.

t. In a filter, a chamber formed of envelopin g walls, vertical standards arranged therein, each standard being provided with two vertically-arranged recesses, filtering-blocks secured in the recesses and arranged vertically with reference to each other, grooves around the edges of the filtering-blocks to receive the cement by which to secure the edges of the filtering-blocks to the vertical standards and the adjacent blocks respectively.

In testimony that I claim the foregoing as my own I hereby affix my signature in presence of two witnesses.

JOHN F. ZIEGLER.

Witnesses:

WILLIAM WEBsTER, MAUD SCHUMACHER. 

